Results 11 to 20 of about 509,678 (183)

Electrochemical Water Oxidation Mechanisms Involving Macrocyclic Copper(II) Complexes: Ligand Ring Size Effects on Catalytic Cycles. [PDF]

Chemphyschem
The ring size of the ligand strongly influences electronic properties, steric effects, and coordination modes of key intermediates. Both catalysts show similar energy barriers for OO bond formation, but [Cu(12‐TMC)]2+ exhibits more complex mechanisms due to ligand reorganization.
Neves JPCS, Rivelino R, Vinicius Alves T, Menezes da Silva VH.   +3 more
europepmc   +2 more sources

INFLUENCE OF THE Al CONTENT ON THE PHASE TRANSFORMATIONS IN Cu-Al-Ag ALLOYS

Eclética Química, 2018
The influence of the Al content on the phase transformations in Cu-Al-Ag alloys was studied by classical differential thermal analysis (DTA), optical microscopy (OM) and X-ray diffractometry (XRD).
A. T. A., A. V. BENEDETTI, R. A. G. da SILVA, M. BLANCO   +3 more
doaj   +1 more source

Antimicrobial Photosensitizing Material Based on Conjugated Zn(II) Porphyrins

Antibiotics, 2022
The widespread use of antibiotics has led to a considerable increase in the resistance of microorganisms to these agents. Consequently, it is imminent to establish new strategies to combat pathogens. An alternative involves the development of photoactive
Sofía C. Santamarina, Daniel A. Heredia, Andrés M. Durantini, Edgardo N. Durantini   +3 more
doaj   +1 more source

Kinetic of the surface dissolution of SAE-AISI 1005 steel in acid media

Eclética Química, 2018
The automotive sector is one of the biggest consumers of ferrous materials, which require an efficient protection against corrosion. This protection can be reached applying adequate coatings. A careful surface preparation is required to apply any kind of
Marina Magnani, Cecílio Sadao Fugivara, Roberto Garcia, Assis Vicente Benedetti   +3 more
doaj   +1 more source

Avaliação da Qualidade Físico-Química do Leite Ultra Pasteurizado Comercializado no Município de Erechim – RS

Vigilância Sanitária em Debate, 2015
O trabalho teve como objetivo avaliar a qualidade físico-química do leite ultra pasteurizado comercializado no município de Erechim - RS. Nos meses de maio e agosto de 2014, foram coletadas seis amostras de leite UHT integral, correspondentes a seis diferentes marcas, totalizando doze amostras, cuja qualidade foi avaliada através dos parâmetros umidade,
Leonardo Souza da Rosa, Cassiane Marini Garbin, Luana Zamboni, Marlice Salete Bonacina   +3 more
openaire   +5 more sources

Caracterización de recubrimientos Ni-P depositados por reducción química autocatalítica en superficies internas

Revista de Metalurgia, 1995
El níquel depositado por reducción química autocatalítica con hipofosfito forma un depósito amorfo de Ni-P con un contenido de fósforo entre el 4 y el 12 % en masa.
J. Porcayo-Calderón, E. Sarmientos-Bustos   +1 more
doaj   +1 more source

Tuning the Molecular Structure of Corroles to Enhance the Antibacterial Photosensitizing Activity

Pharmaceutics, 2023
The increase in the antibiotic resistance of bacteria is a serious threat to public health. Photodynamic inactivation (PDI) of micro-organisms is a reliable antimicrobial therapy to treat a broad spectrum of complex infections.
Edwin J. Gonzalez Lopez, Sol R. Martínez, Virginia Aiassa, Sofía C. Santamarina, Rodrigo E. Domínguez, Edgardo N. Durantini, Daniel A. Heredia   +6 more
doaj   +1 more source

Determinação do mecanismo de destruição de células mediado por meso-tetramesitylporfirina, octaetilporfirina, octaetilporfirina de vanadil e luz visível

Eclética Química, 2018
A Terapia Fotodinâmica é um tratamento clínico empregado no combate a vários tipos de tumores. Nesta técnica, o paciente recebe uma certa dosagem de uma substância fotossensibilizadora que, por sua vez, acumula-se preferencialmente no tecido tumoral.
J. N. Ribeiro, R. A. Jorge
doaj   +1 more source

57 Harmonical oscillator and electro-mechanical analogy: an interdiscinary experiment to high precision mass variation measurements

Eclética Química, 2018
In general, the traditional Physics courses needs examples of the aplications of the Physics concepts in other areas such as Chemistry and Biology. This lacks tend to demotivate Chemistry and Biology students regarding to deal with Physical concepts ...
Ailton Massaiti Watanabe, Adriano dos Santos, Paulo Roberto Bueno   +2 more
doaj   +1 more source

Corrosion Resistance of Electrodeposited Ni-Mo-W Coatings

International Journal of Electrochemical Science, 2014
A comparative investigation was carried out with electrodeposited Ni-W and Ni-Mo-W coatings to evaluate the influence of Mo content on the corrosion resistance.
Paulo N.S. Casciano, Ramon L. Benevides, Pedro de Lima-Neto, Adriana N. Correia   +3 more
doaj   +1 more source